127040020 has 12 divisors (see below), whose sum is σ = 266784084. Its totient is φ = 50816000.

The previous prime is 127039999. The next prime is 127040033. The reversal of 127040020 is 20040721.

It can be written as a sum of positive squares in 2 ways, for example, as 81396484 + 45643536 = 9022^2 + 6756^2 .

It is a super-2 number, since 2×127040020² = 32278333363200800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 127039976 and 127040003.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3175981 + ... + 3176020.

It is an arithmetic number, because the mean of its divisors is an integer number (22232007).

Almost surely, 2^127040020 is an apocalyptic number.

127040020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

127040020 is an abundant number, since it is smaller than the sum of its proper divisors (139744064).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

127040020 is a wasteful number, since it uses less digits than its factorization.

127040020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6352010 (or 6352008 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 16.

The square root of 127040020 is about 11271.2031301011. The cubic root of 127040020 is about 502.7053622957.

Adding to 127040020 its reverse (20040721), we get a palindrome (147080741).

The spelling of 127040020 in words is "one hundred twenty-seven million, forty thousand, twenty".